diff --git a/core/models/OperatorProxySession.py b/core/models/OperatorProxySession.py
index a9e5276..a1675ca 100644
--- a/core/models/OperatorProxySession.py
+++ b/core/models/OperatorProxySession.py
@@ -14,3 +14,4 @@ class OperatorProxySession:
     subscription_url: Optional[str]
     operator_id: int
     operator_name: str
+    operator_domain: Optional[str] = None
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